Percentage and relative risk (RR) of quitting at follow-up
| Sociodemographics and smoking-related variables | Percentage quit | (n) | Crude RR (95% CI) | Adjusted RR‡ (95% CI) |
| Age | (−756) | 1 (0.99 to 1.02) | 1.02 (1.00 to 1.04) | |
| Sex | ||||
| Male | 12.20% | (−440) | 1 | 1 |
| Female | 14.60% | (−316) | 1.23 (0.69 to 2.21) | 1.01 (0.45 to 2.24) |
| Marital status | ||||
| Couple | 12.60% | (−502) | 1 | 1 |
| Separated/widowed | 9.20% | (−95) | 0.7 (0.34 to 1.45) | 0.8 (0.29 to 2.15) |
| Single | 16.70% | (−158) | 1.39 (0.59 to 3.28) | 1.64 (0.67 to 4.04) |
| Education | ||||
| Primary graduate or less | 11.50% | (−248) | 1 | 1 |
| Secondary graduate | 13.40% | (−257) | 1.19 (0.52 to 2.72) | 1.29 (0.52 to 3.23) |
| High school graduate or more | 15.20% | (−237) | 1.38 (0.69 to 2.75) | 1.5 (0.60 to 3.75) |
| Employment status | ||||
| Unemployed or inactive | 16.20% | (−243) | 1 | 1 |
| Employed | 11.80% | (−511) | 0.69 (0.33 to 1.47) | 0.6 (0.24 to 1.52) |
| Income | ||||
| Low ($0 to $3000 pesos) | 15.20% | (−190) | 1 | 1 |
| Medium ($3001 to $5000 pesos) | 13.60% | (−210) | 0.88 (0.37 to 2.07) | 1.03 (0.48 to 2.22) |
| High ($5001 pesos or more) | 9.80% | (−282) | 0.61 (0.22 to 1.63) | 0.55 (0.20 to 1.51) |
| Smoking status | ||||
| Heavy smoker | 9.50% | (−378) | 1 | 1 |
| Light smoker† | 15.80% | (−361) | 2.32* (1.34 to 4.03) | 2.66* (1.41 to 4.99) |
| Made serious quit attempts the previous year | ||||
| No | 13.10% | (−556) | 1 | 1 |
| Yes | 13.10% | (−200) | 1 (0.53 to 1.92) | 0.9 (0.45 to 1.78) |
| Plan to quit within the next 6 months | ||||
| No | 11.90% | (−584) | 1 | 1 |
| Yes | 16.50% | (−122) | 1.46 (0.71 to 3.03) | 1.31 (0.63 to 2.72) |
| Observations | 621 | |||